.banner-top-box .banner-top {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  max-height: 100vh;
  bottom: 0;
}
.banner-top-box .banner-top img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.banner-top-box .banner-top .mouse-box {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}
.banner-top-box .banner-top .mouse-box p {
  font-size: 12px;
  color: #fff;
  margin: 0;
  padding: 0;
  margin-bottom: 10px;
}
.banner-top-box .banner-top .mouse-box .mouse {
  width: 20px;
  height: 30px;
  border: 2px solid #fff;
  border-radius: 10px;
  margin: 0 auto 1px;
  overflow: hidden;
  position: relative;
}
.banner-top-box .banner-top .mouse-box .mouse::after {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  margin-left: -1px;
  width: 2px;
  height: 6px;
  background-color: #fff;
  border-radius: 2px;
  animation: scrollDown 2s infinite linear;
}
.banner-top-box .banner-top .mouse-box i {
  display: block;
  width: 5px;
  height: 5px;
  border-right: 1px solid #fff;
  border-bottom: 1px solid #fff;
  margin: 0 auto;
  transform: rotate(45deg);
}
@keyframes scrollDown {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    transform: translate(0, 0.2rem);
    opacity: 0;
  }
}
.banner-top-box .banner-top-empty {
  height: 100vh;
  position: relative;
  z-index: 2;
}
@media (max-width: 1200px) {
  .banner-top-box {
    display: none;
  }
}
